The invention relates to the technical field of relay protection and specifically to a process layer equipment data acquisition and control system. The process layer equipment data acquisition and control system comprises a collecting board, a spacer board, a unit board, a voltage transformer board, and a current transformer board. The collecting board is connected with the spacer board through a bus and converts an AC voltage analog signal into a SV digital signal. The unit board converts an AC current analog signal into a current digital signal. The spacer board converts the current digital signal into a SV digital signal, converts a spacer digital input signal into a GOOSE signal, transmits the GOOSE signal to a digital host computer and receives a GOOSE instruction from the digital host computer in order to use the GOOSE instruction as a spacer digital output signal to control the unit board. By means of control technology, the system converts multiple spacer AC and digital analog signals of the transformer station into the SV digital signals and the GOOSE signals satisfying a process layer network, and transmits the signals to the digital host computer in a transformer station, thereby achieving digitization of a conventional transformer station.